<?php
// JsonSerialiser.php
// Created: 2022-01-13
// Updated: 2022-02-27

namespace Index\Serialisation;

use Index\WString;
use Index\IO\Stream;

/**
 * Provides a JSON serialiser.
 */
class JsonSerialiser extends Serialiser {
    private JsonSerialiserSettings $settings;

    /**
     * Creates a new JSON serialiser instance.
     *
     * @param JsonSerialiserSettings|null $settings Settings to be used with this serialiser.
     */
    public function __construct(?JsonSerialiserSettings $settings = null) {
        $this->settings = $settings ?? new JsonSerialiserSettings;
    }

    public function serialise(mixed $input): string {
        $output = json_encode($input, $this->settings->getFlags(), $this->settings->getMaxDepth());
        if($output === false)
            $output = '';
        return $output;
    }

    public function deserialise(Stream|string $input): mixed {
        //if($input instanceof WString)
        //    $input = $input->convertEncoding('utf-8');
        return json_decode((string)$input, false, $this->settings->getMaxDepth(), $this->settings->getFlags());
    }
}